C++面向对象类的实例题目六

#include<iostream>
using namespace std;
class Rectangular
{
public:
Rectangular(double w,double l)
{
width = w;
length = l;
}
double getc()
{
circumference = width + length;
return circumference;
}
double adddata(Rectangular &r)
{
return (circumference + r.getc());
}
private:
double width;
double length;
double circumference;
};
int main()
{
Rectangular r1(2.5,3.5);
cout<<"Circumference of r1 ="<<r1.getc()<<endl;
Rectangular r2(2,3);
cout<<"Circumference of r2 ="<<r2.getc()<<endl;
cout<<"Circumference of r1+r2 ="<<r1.adddata(r2)<<endl;
return 0;
}

Circumference of r1 =6
Circumference of r2 =5
Circumference of r1+r2 =11